405000020342 has 4 divisors (see below), whose sum is σ = 607500030516. Its totient is φ = 202500010170.

The previous prime is 405000020309. The next prime is 405000020371. The reversal of 405000020342 is 243020000504.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101250005084 + ... + 101250005087.

It is an arithmetic number, because the mean of its divisors is an integer number (151875007629).

Almost surely, 2^405000020342 is an apocalyptic number.

405000020342 is a deficient number, since it is larger than the sum of its proper divisors (202500010174).

405000020342 is a wasteful number, since it uses less digits than its factorization.

405000020342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202500010173.

The product of its (nonzero) digits is 960, while the sum is 20.

Adding to 405000020342 its reverse (243020000504), we get a palindrome (648020020846).

The spelling of 405000020342 in words is "four hundred five billion, twenty thousand, three hundred forty-two".